Electric sadiron



Oct. 9, 1923.

K s. T. ARNOLD ELECTRIC SADIRON Filedl April 25, 1921 p 25 minimum.

f Pateniea occa, 1923.

UNITED STATES 1,470,041 PATENT OFFICE.

SATTERLEE T. ARNOLD, OF PADUCAH, KENTUCKY, ASSIGNOR T SOUTHERN TEXTILE ACHINERY COMPANY, PADUCAH, KENTUCKY, A CORPORATION OF KENTUCKY.

ELECTRIC SADIRON.

Application filed .April 25, 1921. Serial No. 464,266.

To all whom z't may concern.'

Be it known that I, SATTERLEE T. ARNOLD, a citizen of the United States, residing at Paducah, in the county of McCracken and 6 State of Kentucky, have invented certain new and useful Improvements'in Electric Sadirons, of which the following is a specification. f'

My invention relates to improvements in 10 electric sad irons and more particularly to an improved thermostatic switch or control device adapted to prevent the over heating of the iron and particularly to prevent the burning out of the resistance element or heating coil.

The primary object of the invention is to provide a'generally improved device of the class indicated, which will be exceedingly simple in construction, cheap of manufacture, and etlicient in use.

A further and very important object is fto provide a thermostatic device of the class indicated in which the liability to damage or deterioration while use is reduced to a U`A still further object is the provision of means for adjusting the parts whereby to regulate the temperature of the resistance coil or element and whereby the make and break action of the contact elements may be regulatedto conform to any desired or predetermined temperature of the iron and electric resistance or heater unit.

With the above mentioned and other ends in view, the invention consists in the novel construction, arrangement, and combination Vl`of parts, hereinafter described, illustrated in one of itsembodiments in the accompanying drawings, and particularly pointed out inl the appendedk claims.

Referring to the drawings, forming-a part of this specification, Figure 1, is aside elevation, partly' in vertical longitudinal section, of an electric iron constructed in accordance with this invention.

Fig. 2, atop plan View of the base portion of the viron with the handle and surrounding casing removed, and illustrating in particular the thermostatic control device.l

Similar numerals of reference designate like parts throughout al1 the, figures ofl the drawings- The base or main body portion 1, of theAv iron may be of any suitable or convenient construction, and so likewise as to the detachable casing or cover 2, and the handle 3. The body 1, of the iron is provided within a sultable and convenient receptacle for the electric `resistance element or coil of any most clearly in Fig. l, of the drawings. The circuit breaker comprises relatively fixed and movable arms l4, and 4, respectively, connected at their base portions by means of a transverse portion 4", the relatively iixed side arm 4, being secured or anchored to the upper portion of the main body 1, of the iron by means of attaching or securing screws 5. l

As a means of actuating the relatively movable or floating arm 4a, in accordance with variations in the temperature of the subjacent iron body and particularly the resistance or heater coil (not shown) a block 6, is interposed between the base or connect ed portions of the arms 4, and 4a, said block being formed of suitable material such as aluminum, or the like, adapted to expand and contract with the variations in temperature of the forward portion of the heating coil, and it will be obvious that by reason of the location of the thermostatic block 6, the expansive and contractive movements of the latter will be greatlyextended or amplitied in the free end of the floating arm 4, and the Contact element carried thereby.

As a means of providing suitable contact elements in the inlet and outlet conductors 7 and 7, respectively, leading to the resistance element or unit in the iron, the relatively fixed or anchored side arm 4, isprovided with an insulated opening 4, through which the `wire 7, is extended, said wire being connected to avcontact element 7b, in the specific form of'a flexible metallic conducting strip insulated from the inner side of the arm 4, by means of an insulation strip 7. The free end of the contact element 7", is adapted to be controlled or regulated by means oit an adjusting screw 8, threaded in a threaded opening in the lined arme, said screw 8 leading to one side of the iron'casing 9 for adjusting the circuit breaker or contact element in accordance With the different de sired heats or temperatures.

its a means providing a cooperating Contact element 9, on the movable or deating arm da, the latter is provided vvith a strip of conducting material on its outer side insulated there;2 om by means oi a suitable strip insulating material 9a., said contact., A Y1esent instance, being in the specific form or a longitudinally extending member on the outer side oi the arm and a transverselv extending bridge member extending toward the 'lree end ot the Contact element to make contact with the most clearly inFig. 2, oi

7b? and adapte latte as shown swings.

base of the contact strip 9, on the outer of the doating arm fla, is connected to second section of the inlet conductov vf're Z, through a suitable connecting et it Sb, so that when the contact eleme are closed, thereby closing the cir- 't current will iiovv through the inlet Wire '27, and downwardly into the si portion i0, of the resistance ele- {see Fig. 2) and after passing thereugh passes out through the opposite i ual portion il, and outwardly through Za7 connected to the Contact element socket ll.

l be seen that the aluminum bloclf: en' the base portions ci the arms la i vvill expand and contract more eadily than such arms, and it Awill be aparent that by adjusting the scretv 87 in the eetively lined arm el? of the controller'7 the amount oi heat necessary to open the circuit may be governed and the temperature of the electric iron may therefore be set Within certain limitations.

The block 6, may be^secured in position means of an insulated attaching element l2, and the controlled members Ll, -a, and 4P, are preferably formed integral and of suitable metallic material adapted to yield and yet return to anormal position when the current is cut out or reduced.

lErom the foregoing description, taken in connection With the accompanying drawings, the operation and advantages of my invent'on will be readily understood.

l ving thus described one of the embodiments ot my invention, Without having attempted to oi'tli all the forms inl which it may be mad-ea or all the modes of its i c, what T cla` :a and desire to secure by sq i il. Letters latent isf- 1. ln an electric iron, a U-shaped circuit breaker embodying relatively xed and movable side arms carrying contact elements, and a thermostatic'bloclr'interposed between said arms and adapted to control said movable arm and contact elements.

2.111 an electric iron provided with a resistanceunit, a lLi-shaped controller embodying a relatively fixed arm provided vvith a contact element and a relatively movable arm provided with a cooperative contact element, and a thermostatic block between said arms of said lol-shaped controller in cooperative relation to said resistance unit and said movable arm.

"3. ln an electric iron, a body provided with a resistance unit, a U-shaped controller above the latter embodying a relatively ixed arm provided with a movable contact element and a relatively movable arm provided With a cooperative contact element, means on said fixed arm for adjusting said movable Contact element7 and a thermostat in cooperative relation to said resistance unit and said movable arm. f

In an electric iron, the combination with an electric circuit including a resistance heater element;v of a U-shaped controller device mounted above and insulated from said heating element, one of said arms being fixed and the other movable, a thermostat mounted Within the base portions of said arms and adapted to actuate said movable arm, Contact elements carried by said arms and normally in circuit with said electric circuit, and means for adjusting said contact elements to regulate the temperature 'of said resistance element.

E. In an electric iron, the combination vvith an electric circuit including a resistance element and an electric iron body heated thereby; of a U-shaped circuit breaker extending across said iron body above said resistance unit, one of said arms being relatively fiXed and provided with an adjustable 'contact element 1n said circuit and the other A arm being relatively movable and provided vvith a second cooperating contact element, and an enpansible and contractable block interposed between the base portions of said arms, y

6. In an electric iron, the combination `vith an electric circuit including a resistance element and an electric iron bod heated thereby; of a U-shaped circuit breaker extending across and insulated from said iron body above said resistance unit, one of said arms bein relatively fixed and provided with an a justable contact element in said circuit and the other` arm being relatively movable and provided with a second cooperative' Contact element and an eX ansible and contractable block interposedlbetween the base ortions of said arms and arranged above t e front portion of said iron body and resistance element.

In an electric sad iron, the combination with an electric circuit lincluding a resistance element; of a circuit make and adapted to move and control the latter and break device including relatively fixed and the other of said Contact elements in aceord- 10 movable arms above said resistance element, ance with the temperature of said resistsaid arms carrying Contact elements, means ance element.

5 carried by one of said arms for adjusting In testimony whereof I hereby aix my one of said Contact elements, and a thersignature.

i mostatic element in cooperative relation to o said resistance element and movable arm v SATTERLEE T. ARNOLD. 

